WO2022139176A1 - Composition de résine thermoplastique et produit moulé fabriqué à partir de celle-ci - Google Patents

Composition de résine thermoplastique et produit moulé fabriqué à partir de celle-ci Download PDF

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Publication number
WO2022139176A1
WO2022139176A1 PCT/KR2021/016593 KR2021016593W WO2022139176A1 WO 2022139176 A1 WO2022139176 A1 WO 2022139176A1 KR 2021016593 W KR2021016593 W KR 2021016593W WO 2022139176 A1 WO2022139176 A1 WO 2022139176A1
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resin composition
thermoplastic resin
weight
parts
ethylene
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PCT/KR2021/016593
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English (en)
Korean (ko)
Inventor
이선애
정봉재
김연경
박지권
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롯데케미칼 주식회사
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Publication of WO2022139176A1 publication Critical patent/WO2022139176A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/0066—Flame-proofing or flame-retarding additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/49—Phosphorus-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment

Definitions

  • the present invention relates to a thermoplastic resin composition and a molded article prepared therefrom. More specifically, the present invention relates to a thermoplastic resin composition having excellent flame retardancy, heat resistance, rigidity, molding processability, and the like, and a molded article manufactured therefrom.
  • Polypropylene resin is excellent in chemical resistance, weather resistance, processability, etc., so it is easy to manufacture in the form of injection molded products, films, and blow molded products, and is a material widely used in the fields of automobiles, building materials, electrical parts, etc.
  • thermoplastic resin composition Since polypropylene resin is a flammable material in its chemical structure, various organic or inorganic flame retardants are added together in order to impart flame retardant properties. However, as interest in environmental issues is emerging, regulations on existing halogen-based flame retardants are gradually being strengthened. In order to use the thermoplastic resin composition as an eco-friendly material, reduction or exclusion of halogen-based flame retardants is required.
  • thermoplastic resin composition when only a non-halogen-based flame retardant is applied to the thermoplastic resin composition, there is a problem in that the flame retardancy is significantly lowered compared to when the halogen-based flame retardant is applied.
  • a non-halogen-based flame retardant and an inorganic filler such as talc when a non-halogen-based flame retardant and an inorganic filler such as talc are mixed and applied, molding processability, etc. may be reduced.
  • thermoplastic resin composition excellent in flame retardancy, heat resistance, rigidity, molding processability, and balance of these properties.
  • thermoplastic resin composition excellent in flame retardancy, heat resistance, rigidity, molding processability, and balance of physical properties thereof.
  • Another object of the present invention is to provide a molded article formed from the thermoplastic resin composition.
  • thermoplastic resin composition comprises about 100 parts by weight of a polyolefin resin including at least one of a polypropylene resin and an ethylene-propylene block copolymer; About 30 to about 60 parts by weight of a phosphorus-based flame retardant; about 0.2 to about 12 parts by weight of maleic anhydride-modified olefinic polymer; about 5 to about 45 parts by weight of talc; and about 0.1 to about 15 parts by weight of expanded graphite having an expansion start temperature of about 220° C. or higher, wherein the weight ratio of the talc and the expanded graphite is about 1: 0.003 to about 1: 0.3.
  • the ethylene-propylene block copolymer may include about 20 to about 60 wt% of ethylene and about 40 to about 80 wt% of propylene.
  • the ethylene-propylene block copolymer may include about 60 to about 95 wt% of a propylene homopolymer and about 5 to about 40 wt% of a rubbery ethylene-propylene copolymer.
  • the ethylene-propylene block copolymer has a melt-flow index (MI) of about 5 to about 230°C and 2.16 kg load condition according to ASTM D1238 100 g/10 min.
  • MI melt-flow index
  • the phosphorus nitrogen-based flame retardant is melamine polyphosphate, melam pyrophosphate, melem pyrophosphate, melon pyrophosphate, melamine pyrophosphate, dimelamine pyrophosphate, melam polyphosphate, melon polyphosphate, melem poly phosphate, ammonium hydrogen phosphate, ammonium dihydrogen phosphate, and ammonium polyphosphate.
  • the maleic anhydride-modified olefinic copolymer may be an alkylene homopolymer or an alkylene- ⁇ -olefin copolymer by graft polymerization of maleic anhydride.
  • the weight ratio of the maleic anhydride-modified olefin-based polymer and the talc may be from about 1:2 to about 1:110.
  • the weight ratio of the maleic anhydride-modified olefin-based polymer and the expanded graphite may be from about 1:0.1 to about 1:10.
  • thermoplastic resin composition may have a flame retardancy of V-0 of a 2.5 mm thick injection specimen measured by the UL-94 vertical test method.
  • the thermoplastic resin composition may have a combustion length of about 1 to about 35 mm of a 125 ⁇ 13 ⁇ 15 mm specimen measured in accordance with KS M ISO 9772, and a combustion time of about It may be 30 seconds or less.
  • thermoplastic resin composition has a heat deflection temperature (HDT) of about 130 to about 160 measured under the conditions of a load of 18.56 kgf/cm 2 , and a temperature increase rate of 120° C./hr according to ASTM D648 °C.
  • HDT heat deflection temperature
  • thermoplastic resin composition has a flexural strength of about 300 to about 900 kgf/cm 2 days measured at a rate of 2.8 mm/min using a 3.2 mm thick specimen according to ASTM D790 can
  • Another aspect of the invention relates to a molded article.
  • the molded article is characterized in that it is formed from the thermoplastic resin composition according to any one of 1 to 12.
  • the present invention has the effect of providing a thermoplastic resin composition excellent in flame retardancy, heat resistance, rigidity, molding processability, balance of physical properties, and the like, and a molded article formed therefrom.
  • thermoplastic resin composition comprises (A) a polyolefin resin; (B) a phosphorus nitrogen-based flame retardant; (C) maleic anhydride-modified olefinic polymer; (D) talc; and (E) expanded graphite.
  • the polyolefin resin of the present invention includes at least one of (A1) a polypropylene resin and (A2) an ethylene-propylene block copolymer.
  • a polypropylene resin may be used alone, or a polypropylene resin and an ethylene-propylene block copolymer may be mixed and used.
  • polypropylene resin As the polypropylene resin according to an embodiment of the present invention, a polypropylene resin (propylene homopolymer) used in a conventional thermoplastic resin composition may be used.
  • the polypropylene resin may have a weight average molecular weight (Mw) measured by gel permeation chromatography (GPC) of about 10,000 to about 400,000 g/mol, for example, about 15,000 to about 350,000 g/mol.
  • Mw weight average molecular weight measured by gel permeation chromatography
  • the thermoplastic resin composition may have excellent mechanical strength, molding processability, and the like.
  • the polypropylene resin has a melt-flow index of about 5 to about 100 g/10 min, for example about 5, measured at 230° C. and 2.16 kg load condition according to ASTM D1238. to about 70 g/10 min.
  • the thermoplastic resin composition may have excellent mechanical strength, molding processability, and the like.
  • the polypropylene resin may be included in an amount of about 20 to 100% by weight, for example, about 40 to 100% by weight of 100% by weight of the polyolefin resin.
  • Impact resistance, rigidity, flame retardancy, molding processability, etc. may be excellent in the above range.
  • the ethylene-propylene block copolymer according to one embodiment of the present invention can improve the impact resistance, rigidity, molding processability, etc. of the thermoplastic resin composition, and is an ethylene-propylene block copolymer used in a conventional thermoplastic resin composition (block polypropylene) can be used.
  • the ethylene-propylene block copolymer may be a resin in which a propylene homopolymerized portion and an ethylene-propylene copolymerized portion are step-polymerized in a reactor.
  • the ethylene-propylene block copolymer comprises about 20 to about 60 weight percent ethylene, such as about 30 to about 50 weight percent, and about 40 to about 80 weight percent propylene, such as about 50 to about 70 weight percent. % may be included.
  • the thermoplastic resin composition may have excellent moldability, impact resistance, and the like.
  • the ethylene-propylene block copolymer is a continuous phase (matrix) of about 60 to about 95% by weight of a propylene homopolymer, for example, about 70 to about 90% by weight of a rubber component of a dispersed ethylene-propylene copolymer from about 5% to about 40% by weight, for example from about 10% to about 30% by weight.
  • the thermoplastic resin composition may have excellent rigidity, impact resistance, and the like.
  • the ethylene-propylene block copolymer has a melt-flow index (MI) of about 1 to about 130 g/10 min, measured at 230 ° C. and 2.16 kg load condition, according to ASTM D1238.
  • MI melt-flow index
  • ASTM D1238 2.16 kg load condition
  • the ethylene-propylene block copolymer may be included in an amount of about 80% by weight or less, for example, about 60% by weight or less of 100% by weight of the polyolefin resin.
  • Impact resistance, rigidity, flame retardancy, molding processability, etc. may be excellent in the above range.
  • Phosphorus nitrogen-based flame retardant according to an embodiment of the present invention is applied together with maleic anhydride-modified olefinic polymer, talc, specific expanded graphite, etc.
  • a phosphorus nitrogen-based flame retardant used in a conventional thermoplastic resin composition may be used.
  • the phosphorus nitrogen-based flame retardant is melamine polyphosphate, melam pyrophosphate, melem pyrophosphate, melon pyrophosphate, melamine pyrophosphate, dimelamine pyrophosphate, melam polyphosphate, melon polyphosphate, melem polyphosphate, ammonium hydrogen phosphate, ammonium dihydrogen phosphate, ammonium polyphosphate, combinations thereof, multiple salts thereof, and the like.
  • melamine polyphosphate, ammonium polyphosphate, etc. may be used as the phosphorus nitrogen-based flame retardant.
  • the phosphorus nitrogen-based flame retardant may be included in an amount of about 30 to about 60 parts by weight, for example, about 35 to about 55 parts by weight, based on about 100 parts by weight of the polyolefin resin.
  • the content of the phosphorus nitrogen-based flame retardant is less than about 30 parts by weight based on about 100 parts by weight of the polyolefin resin, there is a risk that the flame retardancy of the thermoplastic resin composition (molded article) may be reduced, and when it exceeds about 60 parts by weight, the thermoplastic resin There is a possibility that the moldability, heat resistance, etc. of the composition (molded article) may be deteriorated.
  • Maleic anhydride-modified olefin-based polymer according to an embodiment of the present invention is applied together with a phosphorus nitrogen-based flame retardant, talc, specific expanded graphite, etc. to improve the compatibility, flame retardancy, heat resistance, rigidity, etc. of the olefin-based thermoplastic resin composition.
  • a maleic anhydride-modified olefin-based polymer obtained by (grafting) polymerization of maleic anhydride to an alkylene homopolymer or an alkylene- ⁇ -olefin copolymer may be used.
  • alkylene monomer alkylene having 2 to 10 carbon atoms may be used, for example, ethylene, propylene, isopropylene, butylene, isobutylene, octene, combinations thereof, etc. may be used. .
  • the maleic anhydride-modified olefin-based polymer may include a maleic anhydride-modified propylene homopolymer, a maleic anhydride-modified ethylene-propylene copolymer, and a maleic anhydride-modified propylene-1-octene copolymer.
  • the maleic anhydride-modified olefin-based copolymer has a melt-flow index of about 50 to about 300 g/10 min, measured at 230°C and 2.16 kg load condition according to ASTM D1238; For example, it may be about 80 to about 120 g/10 min.
  • the maleic anhydride-modified olefin-based polymer may be included in an amount of about 0.2 to about 12 parts by weight, for example, about 0.3 to about 10 parts by weight based on 100 parts by weight of the polyolefin resin.
  • the content of the maleic anhydride-modified olefin-based polymer is less than about 0.2 parts by weight based on about 100 parts by weight of the polyolefin resin, the flame retardancy, heat resistance, rigidity, impact resistance, etc. of the thermoplastic resin composition (molded article) may be reduced, and , When it exceeds about 12 parts by weight, there is a fear that the flame retardancy, heat resistance, etc. of the thermoplastic resin composition (molded article) may be lowered.
  • the weight ratio (B:C) of the phosphorus nitrogen-based flame retardant (B) and the maleic anhydride-modified olefin-based polymer (C) is from about 1: 0.001 to about 1: 0.4, for example from about 1: 0.0012 to about 1: It may be 0.38. In the above range, flame retardancy and mechanical properties of the thermoplastic resin composition (molded article) may be more excellent.
  • Talc according to one embodiment of the present invention is applied together with a phosphorus nitrogen-based flame retardant, maleic anhydride-modified olefin-based polymer, specific expanded graphite, etc. that can be improved
  • the calcium content of the talc may be about 0.1 wt% or less, for example, about 0.01 to about 0.07 wt%, based on 100 wt% of the total talc. In the above range, the molding processability of the thermoplastic resin composition (molded article) may be more excellent.
  • the talc may have an average particle size (D50, a particle diameter at a point where the distribution ratio becomes 50%) measured by a particle size analyzer from about 1 to about 100 ⁇ m, for example, from about 5 to about 25 ⁇ m.
  • the thermoplastic resin composition may have excellent flame retardancy, molding processability, and the like.
  • the talc may be included in an amount of about 5 to about 45 parts by weight, for example, about 10 to about 40 parts by weight based on about 100 parts by weight of the polyolefin resin.
  • the content of the talc is less than about 5 parts by weight based on about 100 parts by weight of the polyolefin resin, the flame retardancy, rigidity, dimensional stability (shrinkage), etc. of the thermoplastic resin composition (molded article) may be reduced, and about 45 parts by weight When it exceeds, there exists a possibility that the moldability etc. of a thermoplastic resin composition (molded article) may fall.
  • the weight ratio (C:D) of the maleic anhydride-modified olefin-based polymer (C) and the talc (D) is from about 1: 2 to about 1: 110, for example from about 1: 3 to about 1: It can be 100. In the above range, rigidity, heat resistance, dimensional stability, and the like of the thermoplastic resin composition (molded article) may be more excellent.
  • the expanded graphite of the present invention is applied together with a phosphorus nitrogen-based flame retardant, a maleic anhydride-modified olefin-based polymer, talc, etc. to facilitate char formation when the olefin-based thermoplastic resin composition is burned, and flame retardancy, heat resistance, rigidity, and molding
  • expanded graphite having an expansion start temperature of about 220° C. or higher, for example, about 220 to about 260° C. may be used.
  • the expansion start temperature of the expanded graphite is less than about 220° C., there is a fear that the molding processability of the thermoplastic resin composition (molded article) may be deteriorated.
  • the expanded graphite has an average particle size (D50, particle size at the point where the distribution ratio becomes 50%) measured with a particle size analyzer (LS 13 320 (Beckman Coulter )) from about 100 to about 300 ⁇ m, for example about 150 to about 250 ⁇ m.
  • LS 13 320 Beckman Coulter
  • the thermoplastic resin composition may have excellent flame retardancy, molding processability, and the like.
  • the expanded graphite may be included in an amount of about 0.1 to about 15 parts by weight, for example, about 0.1 to about 8 parts by weight based on 100 parts by weight of the polyolefin resin.
  • the content of the expanded graphite is less than about 0.1 parts by weight based on about 100 parts by weight of the polyolefin resin, there is a risk that the flame retardancy and heat resistance of the thermoplastic resin composition (molded article) may be lowered, and when it exceeds about 15 parts by weight, the thermoplastic resin composition (molded article) may be reduced by weight. There exists a possibility that the moldability etc. of a resin composition (molded article) may fall.
  • the weight ratio (C:E) of the maleic anhydride-modified olefin-based polymer (C) and the expanded graphite (E) is from about 1:0.1 to about 1:10, for example from about 1:0.1 to about 1 : May be 8.
  • the thermoplastic resin composition (molded article) may have superior rigidity, processability, flame retardancy, and the like.
  • the weight ratio (D:E) of the talc (D) and the expanded graphite (E) may be about 1: 0.003 to about 1: 0.3, for example, about 1: 0.003 to about 1: 0.27.
  • the weight ratio is less than about 1: 0.003, there is a risk that the flame retardancy, molding processability, heat resistance, etc. of the thermoplastic resin composition (molded article) may decrease, and when it exceeds about 1: 0.3, the molding processability of the thermoplastic resin composition (molded article), There exists a possibility that a flame retardance etc. may fall.
  • the thermoplastic resin composition according to an embodiment of the present invention may further include an additive included in a conventional thermoplastic resin composition.
  • the additive may include, but is not limited to, an antioxidant, an anti-drip agent, a lubricant, a mold release agent, a nucleating agent, an antistatic agent, a stabilizer, a pigment, a dye, a mixture thereof, and the like.
  • its content may be about 0.001 to about 40 parts by weight, for example, about 0.1 to about 5 parts by weight based on 100 parts by weight of the polyolefin resin.
  • thermoplastic resin composition according to an embodiment of the present invention may be in the form of pellets that are melt-extruded at 120 to 280°C, for example 180 to 220°C, by mixing the above components and using a conventional twin-screw extruder.
  • thermoplastic resin composition may have a flame retardancy of V-0 of a 2.5 mm thick injection specimen measured by the UL-94 vertical test method.
  • the thermoplastic resin composition may have a combustion length of about 1 to about 35 mm, for example, about 1 to about 25 mm, of a 125 ⁇ 13 ⁇ 15 mm size specimen measured in accordance with KS M ISO 9772,
  • the burn time may be up to about 30 seconds, for example from about 5 to about 25 seconds.
  • the thermoplastic resin composition has a heat deflection temperature (HDT) of about 130 to about 160° C., for example, measured under the conditions of a load of 18.56 kgf/cm 2 , and a temperature increase rate of 120° C./hr according to ASTM D648. 132 to about 159°C.
  • HDT heat deflection temperature
  • the thermoplastic resin composition has a flexural strength of about 300 to about 900 kgf/cm 2 , for example, about 320 to about 900 kgf/cm 2 , measured at a rate of 2.8 mm/min using a 3.2 mm thick specimen according to ASTM D790. It may be about 600 kgf/cm 2 .
  • the molded article according to the present invention is formed from the thermoplastic resin composition.
  • the antimicrobial thermoplastic resin composition may be prepared in the form of pellets, and the manufactured pellets may be manufactured into various molded articles (products) through various molding methods such as injection molding, extrusion molding, vacuum molding, and casting molding. Such a molding method is well known by those of ordinary skill in the art to which the present invention pertains. Since the molded article is excellent in flame retardancy, heat resistance, rigidity, molding processability, and the balance of these properties, it is useful as an interior/exterior material for electrical and electronic products.
  • a polypropylene resin (manufacturer: Lotte Chemical, product name: H1500, melt-flow index: MI: 12 g/10 min) was used.
  • extrusion was performed at 200° C. to prepare pellets.
  • Specimens were prepared. The physical properties of the prepared specimens were evaluated by the following method, and the results are shown in Tables 1, 2, 3 and 4 below.
  • Heat deformation temperature (HDT, unit: °C): Based on ASTM D648, load 18.56 kgf / cm 2 , It was measured under the conditions of a temperature increase rate of 120 °C / hr.
  • thermoplastic resin composition pellets prepared in Examples and Comparative Examples were visually checked to evaluate moldability (foaming level). ( ⁇ : normal, ⁇ : press/injection possible, but slightly foaming, ⁇ (extrusion not possible): severe foaming during extrusion, making it impossible to create a strand)
  • Example 6 7 8 9 10 11 (A1) (wt%) 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 (A2) (wt%) 20 20 20 20 20 20 20 (B1) (parts by weight) 40 40 40 40 40 40 40 (B2) (parts by weight) - - - - - - (C) (parts by weight) 0.3 10 One One One (D) (parts by weight) 30 30 10 40 30 30 (E1) (parts by weight) One One One One 0.1 8 (E2) (parts by weight) - - - - - - (E3) (parts by weight) - - - - - - - Flame retardancy V-0 V-0 V-0 V-0 V-0 V-0 V-0 Combustion length (mm) 6 8 5 10 10 5 Burning time (seconds) 10 23 9 13 16 8 Heat Deflection Temperature (°C) 143 135 135 155 150 155 Flexural strength (kgf/cm 2 )
  • comparative example 8 9 10 11 12 13 (A1) (wt%) 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 (A2) (wt%) 20 20 20 20 20 20 (B1) (parts by weight) 40 40 40 40 40 40 40 40 (B2) (parts by weight) - - - - - - (C) (parts by weight) One One One One One (D) (parts by weight) 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 40 10 (E1) (parts by weight) 0.05 20 - - 0.1 8 (E2) (parts by weight) - - One - - - (E3) (parts by weight) - - - - One - - Flame retardancy Fail - - - Fail V-0 Combustion length (mm) 100 - - - 100 10 Burning time (seconds) 259 - - - 305 40 Heat Deflection Temperature (°C) 143 - -
  • thermoplastic resin composition of the present invention is excellent in flame retardancy (flame retardancy, combustion length, burning time), heat resistance (thermal deformation temperature), rigidity (flexural strength), molding processability, balance of these properties, etc. have.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Une composition de résine thermoplastique de la présente invention comprend : environ 100 parties en poids d'une résine polyoléfinique comprenant une résine de polypropylène et/ou un copolymère séquencé éthylène-propylène ; environ 30 à 60 parties en poids d'un retardateur de flamme à base de phosphore/azote ; environ 0,2 à 12 parties en poids d'un polymère à base d'oléfine modifié par un anhydride maléique ; environ 5 à 45 parties en poids de talc ; et environ 0,1 à 15 parties en poids de graphite expansé présentant une température de début d'expansion égale ou supérieure à environ 220 °C, le rapport pondéral entre le talc et le graphite expansé variant d'environ 1/0,003 à 1/0,3. La composition de résine thermoplastique se révèle excellente en termes d'ininflammabilité, de résistance thermique, de rigidité, d'aptitude au façonnage, d'équilibre entre ses propriétés physiques, et analogues.
PCT/KR2021/016593 2020-12-24 2021-11-15 Composition de résine thermoplastique et produit moulé fabriqué à partir de celle-ci WO2022139176A1 (fr)

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CN115232401A (zh) * 2022-08-23 2022-10-25 江苏中科聚合新材料产业技术研究院有限公司 一种耐高温阻燃发泡聚丙烯母粒及其制备方法

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